Calculations of signature for Dy, Er, Yb nuclei
- and others
Energy signature splitting {Delta}e` of rotational bands depends sensitively on deformation, pair correlations, and Fermi level in the particular nucleus. Calculating {Delta}e` is therefore very useful in understanding the experimentally observed properties of such bands. In principal, one can extract {Delta}e` from Total Routhian Surface (TRS) calculations as well as from the Cranked Shell Model (CSM). However, the codes available are not based on a fully self-consistent treatment of all critical parameters, deformation, pairing, and Fermi level. The TRS calculations, while modeling the deformation in a {open_quote}realistic{close_quotes} manner as a function of rotational frequency and changes in the quasiparticle configuration, have deficiencies particularly in the treatment of pairing. The CSM codes, on the other hand, estimate pairing and the location of the Fermi level more precisely than the TRS codes, but work under the assumption of a constant deformation. We have developed a method to calculate {Delta}e` that utilizes the most advanced features of both types of codes. This ensures that the best parameter values are used as input for calculating the routhians. As a test, we have used a series of odd-A Dy, Er, and Yb nuclei around A = 160 and compared the results for the vi{sub 13/2} shell with experimental data on {Delta}e`. Details of our method will be discussed and the comparison will be presented.
- OSTI ID:
- 387038
- Report Number(s):
- CONF-931044-; ISSN 0003-0503; TRN: 96:026976
- Journal Information:
- Bulletin of the American Physical Society, Vol. 38, Issue 9; Conference: Fall meeting of the Division of Nuclear Physics of the American Physical Society, Pacific Grove, CA (United States), 20-23 Oct 1993; Other Information: PBD: Oct 1993
- Country of Publication:
- United States
- Language:
- English
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